Salmon with Lentils and Mustard Herb Butter Saumon aux Lentilles recipes

Name: Salmon with Lentils and Mustard-Herb Butter (Saumon aux Lentilles) recipes
Ingredients: 5 tablespoons unsalted butter, softened; 1 tablespoon chopped chives; 1 teaspoon chopped tarragon; 2 teaspoons grainy mustard; 2 teaspoons fresh lemon juice; 1 cup French green lentils; 4 cups water; 2 medium leeks (white and pale green parts only); 1 tablespoon unsalted butter; 1/2 to 1 tablespoon fresh lemon juice; 4 (6-ounce) pieces skinless salmon fillet; 2 tablespoons unsalted butter